It is normal that I have put new battery a year ago to my 575m, is discharged after a week or two?. Happened to anyone?, Or better battery disconnected after use? regards
Or use a trickle charger when you park in the garage. I like the Battery Tender brand of charger because it comes with two quick-disconnect leads (one with alligator clips and one with bolt-on circles). The bolt-on lead can be attached to your 550 battery and then run the lead to the front grill. That way, after you park in the garage, you just pull out the lead connector and hook-up the charger. The price of these chargers with the 2 leads is around $50. Even if you don't use a charger, your battery should last more like 4 - 5 weeks instead of just 1 or 2 weeks. Here is a pic. Image Unavailable, Please Login
That is the one! http://www.amazon.com/Battery-Tender-021-0128-Plus-Charger/dp/B00068XCQU Battery Tender also private lablels. I have three with BMW logos on them - but it is the same thing. I have a cigarette lighter attachment. Works great on my BMWs and the 550. However, a battery dying in a week?? - Something not right. My "battery hungry" cars will not go 3 months unattended (or undriven) but they will go a month to 6 weeks parked and unattended. Phil
Go the the fuse box at passenger footrest. Check the draw on each fuse when your car is at rest with everything turned off except the battery switch. Watch the door your have open,the door lights will draw power. You may find the circuit causing the problem.I use a fuse buddy to chech power going thru each fuse.
My battery usually last about two weeks, but there was one time when it went dead in a week. If you don't drive it at least once a week put a charger on it.
If its gone fully flat a few times it won't ever regain its full charge and won't really be very interested in trickle charging either - 8 days life is very familiar in this context
when the car is switched off, there are a number of things that still draw power, such as alarm systems, remote entry, various memories ( radio etc ) the list gets quite long. A battery may not get fully recharged with short infrequent trips on a non daily driver. As a battery ages, especially not getting a full charge at each outing, the time for it to go flat becomes shorter. Ultimately it is the battery, but not using a battery charger between uses, is the real issue. Drive it daily or use the charger. Ferrari supplies a charger for this reason, to keep the battery up, NOT to recharge a battery gone flat.
Yes, must have something that makes the battery is discharged. I've been watching the charger that sells the Ferrari, but I see that is the same as the CTEK, and the latter is cheaper.
that's what others have reported as well. Many things are outsourced in a car, no reason to pay extra unless having a Ferrari label is important, especially something as generic as a charger.
I have the CTEK hard wired to the battery and sitting under the hood. Plug sticks out the front thru the grill. Plug in if I dont use the car for over a week and for winter storage. It also desulfates the battery..
yes. i had this problem with my 456mgt. could not figure it out for 2 years and 4 batteries. in the end it turned out to be an oil leak from the engine, getting into the alternator, impinging its ability to recharge, and ultimately destroying it. so, check to see if there is something getting into the alternator. if not, then remove the alternator and bench test it.
